Lal, R.L.Bhat, Sandhya2018-10-102018-10-102017-11http://krishikosh.egranth.ac.in/handle/1/5810080861The experiment was conducted at Horticulture Research Centre, Patharchatta, G.B. Pant University of Agriculture and Technology, Pantnagar, during the year 2016 and 2017. The experiment was laid out in a Randomized Block Design with three replications. The experimental trees were thirty years old, planted in square system at 10m x 10m spacing and received uniform cultural practices during the period of investigation. Ten treatments consisting of different organic formulations (FYM (200, 100, 75, kg/tree), Vermicompost (100, 50, 37.5 kg/tree), cow urine and vermiwash (10% foliar spray), Trichoderma harzianum + Pseudomonas fluorescens (10 g/kg), Nutrisol (2.5 ml/l), Chemical control ( NPK – 1200:500:600 g/tree) + (Micronutrients: ZnSO4 – 0.5% + Boric acid – 0.2% + MnSO4 – 1% + CaCl2 - 0.6%) and absolute control. Different treatments involving the use of organic formulations had a significant effect on yield and quality. The present investigation have shown that the application of T6 (FYM 100 kg/tree + Vermicompost 50 kg/tree + 10% Cow urine/tree + 10% Vermiwash/tree + Nutrisol 2.5 ml/l) was most effective in enhancing the flowering and fruiting characters, physical characters of the fruit i.e., fruit weight, fruit length and fruit diameter, fruit volume and yield and also chemical quality parameters of the litchi fruit i.e. TSS, acidity ascorbic acid, total sugars, reducing sugars and non reducing sugars, soil and leaf N, P, K and in minimizing the fruit drop and fruit cracking. On the basis of post harvest life of the litchi, treatment T6 (FYM 100 kg/tree + Vermicompost 50 kg/tree + 10% Cow urine/tree + 10% Vermiwash/tree + Nutrisol 2.5 ml/l) showed the maximum shelf life of 14 days. The highest gross return and net return was obtained with the treatment T6 (FYM 100 kg/tree + Vermicompost 50 kg/tree + 10% Cow urine/tree + 10% Vermiwash/tree + Nutrisol 2.5 ml/l). While the application of T8 ((FYM 75 kg/tree + (Trichoderma harzianum + Pseudomonas fluorescens)10 g/kg + Vermicompost 37.5 kg/tree + (Trichoderma harzianum + Pseudomonas fluorescens)10 g/kg + 10% cow urine + 10% vermiwash + (Trichoderma harzianum + Pseudomonas fluorescens)10 g/kg)) improved the vegetative characters of the tree, soil and leaf Zn and B content.ennullThesis